High-speed, high-accuracy 400-GHz wavelength switching at tunable distributed amplification (TDA-) DFB laser using feedforward control

Tatsumoto, Yudai; Onji, Hirokazu; Kimura, Ryoji; Kato, Kazutoshi; Ishi, Hiroyuki; Simokozono, M.

doi:10.1109/oecc.2015.7340141

Cited by 1 publication

(1 citation statement)

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“…This technique enabled high-speed (<100 ns) wavelength switching. [27][28][29][30][31][32][33] In addition, by adapting feedback control technology, long-term thermal drift is canceled and long-term wavelength stabilization was realized. [33][34][35] Our proposed current control technique enabled us to switch the wavelength of a single TDA-DFB laser in a range of 6 nm.…”

Section: Introductionmentioning

confidence: 99%

High-speed and long-term wavelength stabilization of tunable distributed amplification distributed feedback laser after laser activation with feedforward and feedback control

Fukuda

Yamaguchi

Kuboki

et al. 2018

Jpn. J. Appl. Phys.

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To manage recent exponentially increasing data traffic, optical-to-optical burst switching and packet switching systems have been attracting much attention because they do not require an optical-to-electrical and an electrical-to-optical conversions. These systems require high-speed optical switches with a large number of input/output ports. As a candidate for the optical switch, we have focused on the combination of wavelength tunable lasers and an arrayed waveguide grating router, and studied the tunable distributed amplification distributed feedback (TDA-DFB) lasers for the optical switch. Previously, our derived feedforward current control achieved high-speed wavelength switching at a single laser in six-arrayed TDA-DFB lasers. For larger-scale optical switching, wavelength switching from a laser to another in an array is required to cover a wide tunable range. In this study, we develop a novel current control model and successfully stabilize the wavelength immediately after laser activation, which would enable high-speed switching between different lasers. Furthermore, we demonstrate the combination of feedforward and feedback controls for high-speed switching with long-term stability.

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